Hieam



(No Model.)

H. O. BURK.

MACHINE FOR MAKING MINERS NEEDLES.

No. 328,107. Patented Oct. 13, 1885.

llmlllll LLIIII! l llumnmm l I 1 mnuuum til I UNITED STATES PATENTOFFICE.

HIRAM O. BURK, OF CLEVELAND, OHIO, ASSIGNOR OF ONE-HALF TO JAMES W.OHESN UT, OF SAME PLACE.

MACHINE FOR MAKlNG MINERS NEEDLES.

SPECIFICATION forming part of Letters Patent No. 328,107, dated October13, 1885.

Application filed July 25, 1885. Serial No. 172,638.

To all whom it may concern.-

Be it known that LHIRAM C. BURK, a citizen of the United States,residing at Cleveland, in the county of Ouyahoga and State of Ohio, haveinvented certain new and useful Improvements in Machines for MakingMiners Needles; and I do declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the'same, referencebeing had to the accompanying drawings, and to the letters and figuresof reference marked thereon, which form a part of this specification.

This invention relates to machines for making miners needles; and thenovelty consists in the construction, arrangement, and adaptation ofparts, as will be more fully hereinafter set forth, and specificallypointed out in the claims.

In order to operate properly and efficiently a miners needle must be aperfect taper throughout its operating length. These articles haveheretofore been made by hand,and in order to give the necessary trueoutlines the needles have been expensive, costing from three to sixdollars each. I provide for the ready and cheap manufacture of thesearticles by machinery.

I provide continuously-revolving rolls,their faces being prepared withtapering registering grooves, of proper form. The space between the tworolls,which comprises two corresponding grooves, is equal to the area ofone finished needle. The process being the oldone of rolling metal, andthe grooves being made of true taper, it follows that the resultingneedle will be absolutely perfect and true. I provide a feed-tablehaving grooves upon its upper surface, which correspond in number andarrangement with the grooves in the rollers. The table is movable, andthe grooves receive the blanks from which the needles are to be formed.The table is moved forward automatically to feed the blanks to the rollsand backward to receive other blanks by connections operated from therolls. The roll-shafts are hung in half-boxes, which may be adjustedwith relation to each other at will. These and other features of noveltyare fully illustrated in the ac- (No model.)

companying drawings, which form a part of this specification, and inwhich' Figure 1 is an end elevation, and Fig. 2 a side elevation, of themachine. Fig. 3 is an enlarged view of the two rolls. Fig. 4. is a detail. Fig. 5 is a view of one of the finished needles, and Fig. 6 a topplan view of the table.

Referring to the drawings, Adesignates the base, and A the uprights, ofthe main frame, in which at a is journaled the power-shaft B, havingpinion b and pulley-connections b. The pinion b meshes with a gear, a,rigid upon the shaft O of the upper roller, D, while a gear, 0, upon theopposite end of this shaft 0, meshes with a gear, 0 rigid with the shaft0 of the lower roll, D. These shafts O and Oproject through apertures a,formed in the main frame, and are supported in half-boXes f, held onhorizontal bars F. The bars F are connected by vertical stirrups G, andsetscrews 9 allow them to be adjusted to throw their carried rolls D andD in different relations to each other. The range of adjustment thusgiven to the rolls is necessarily limited, as the gears c 0 must be keptin mesh; but it is nevertheless important in this particular art,allowing the operator to readily accommodate the machine to differentmaterials and to corn pensate for loss by strain or wear.

A designates a guideway on which reciprocates the movable feed-table H.Ihaveillustrated the table as a car; but this is not important, the onlyrequisite being that it move freely back and forth. In its upper surfaceI provide grooves h, corresponding in number and position to thedie-groovesin the rollers. The feed-table is operated automatically bymeans of a lever, I, which, pivoted to the stationary frame at i andextending in the direction of the rolls, has an adjustable slottedleverconnection with the car or movable feedtable. This connectioncomprises the link J having a slot, j, which is adj ustably held to thelever I, by a set-screw, j. The end of the lever I, farthest from itspivot i,1ies in the path of a lug or lugs, it, formed or secured on theroll D. As this lug comes in contact with the lever I, the same isoscillated on its pivot to throw the car or table back for the purposeof having a proper number of suitable blanks vention, the essentialelements of which will placed in its grooves h. As soon as the lug haspassed the end of the lever I, the lever drops either by its gravity orby reason of an added weight, and this action serves, through the linkJ, to throw the feed-table forward and tothrow each of the blanksproperly into its appropriate die-groove.

The parts are so proportioned relatively to each other that the blankswill be properly caught in the widest part of the diegroove of therolls, and the blanks are of such size that when rolled out each willapproximately fill its pair of half grooves to form a finished needle ata single operation.

Of course it will be understood that there are as many lugs 7c properlyarranged as there are sets of die-grooves, and that the table is fedforward and back in proper time to allow the desired placement of theblanks and their prompt deposit in the die-grooves.

This invention must not be confounded with the well-known process ofrolling n1etal,eXcept so far as the employment of the rolls areconcerned, and I wish to recognize the fact that die-faced rolls are oldin this art, as in nail machines.

The machine described is the result ofpractical experiment, and isdesigned for aspecific purposeviz.,the manufacture of miners needles.These articles must, in order to be use ful and efficient, be of a truetaper. To this end the means for adjustment of the rolls is important.It is desirable to make them cheaply, and to this end the automatic feedis important.

I have described and shown what Iconsider the best means for carryingout the invention; but it will be understood that modifications indetails of construction may be made within wide limits without departingfrom the principle or sacrificing the advantages of the inbe apparentfrom the foregoing description, taken in connectionawith the drawings.

Having thus described the invention,what I claim as new, and desire tosecure by Letters Patent of the United States, is-

1. In a machine for making miners needles, the combination, with twocontinuously-revolving die-rolls, as D D, having tapering diegrooves bto correspond, of a power connection and gears for revolving both rollsat the same rate of speed, a table, as H, and connections with the powermechanism for automaticall y moving said table to agree with the motionof the dies, as set forth.

2. In a machine for making miners needles, the combination, withdie-faced rolls, asD D, journaled in half-boxes arranged reversely, ofset-screws, as g, and connections arranged to adjust the rolls withrelation to each other, as set forth.

3. In a machine as described, the die facetl rolls D D, in combinationwith a grooved feed-table and connections for moving said tableautomatically to deposit the blanks into the dies, as set forth.

4. In a machine as described, the combination with the rolls D D, havingtapering diegrooves b", ofa feed-table, as H, having grooves h, tocorrespond with the grooves in the rolls, and connections actuated by alug upon the roll D, as described, for automatically moving thefeed-table,as and for the purposcsset forth.

5. The combination, with the grooved rolls D D and power-connections, ofthe bars F, half-boxes f, stirrups G, and set or adjusting screws 9, asset forth.

6. The combination, with the grooved rolls D D, the latter havinglug 7c,of the grooved feed-table H, lever I, and slotted link J, as set forth.

In testimony whereof I affix my signature.

